package com.rec.service;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import java.util.Map;

import com.rec.entity.Students;

public interface StudentsService {

	Map<String,Object> all(Map<String, Object> params);

	Map<String, Object> add(Map<String, Object> params);

	Map<String, Object> update(Map<String, Object> params);

	Map<String, Object> delete(Map<String, Object> params);

	void addStudent(Students stu);

	Integer download(List<Integer> sid) throws FileNotFoundException, IOException;

	Students findCardnoExist(String cardno);
		
}
